There are interviews where Freddie says, basically, the only true friend he has is Mary Austin.
By most accounts, she is generally a silent partner in all things Queen. She stays out of the spotlight.
To borrow a British phrase, I don’t now why some get their knickers in a twist over Ms Austin.
I don’t know either. It doesn’t matter if she was his “common-law wife”; it was his $$ and he could leave it to whoever he wanted. I believe the movie “Bohemian Rhapsody” is accurate.